/*
		[Leo.C, Studio] (C)2004 - 2008
		
   		$Hanization: LeoChung $
   		$E-Mail: who@imll.net $
   		$HomePage: http://imll.net $
   		$Date: 2008/11/8 18:02 $
*/
/*
	Queue Plug-in
	
	Features:
		*Adds a cancelQueue() method for cancelling the entire queue.
		*All queued files are uploaded when startUpload() is called.
		*If false is returned from uploadComplete then the queue upload is stopped.
		 If false is not returned (strict comparison) then the queue upload is continued.
		*Adds a QueueComplete event that is fired when all the queued files have finished uploading.
		 Set the event handler with the queue_complete_handler setting.
		
	*/

var SWFUpload;
if (typeof(SWFUpload) === "function") {
	SWFUpload.queue = {};
	
	SWFUpload.prototype.initSettings = (function (oldInitSettings) {
		return function () {
			if (typeof(oldInitSettings) === "function") {
				oldInitSettings.call(this);
			}
			
			this.customSettings.queue_cancelled_flag = false;
			this.customSettings.queue_upload_count = 0;
			
			this.settings.user_upload_complete_handler = this.settings.upload_complete_handler;
			this.settings.upload_complete_handler = SWFUpload.queue.uploadCompleteHandler;
			
			this.settings.queue_complete_handler = this.settings.queue_complete_handler || null;
		};
	})(SWFUpload.prototype.initSettings);

	SWFUpload.prototype.startUpload = function (fileID) {
		this.customSettings.queue_cancelled_flag = false;
		this.callFlash("StartUpload", false, [fileID]);
	};

	SWFUpload.prototype.cancelQueue = function () {
		this.customSettings.queue_cancelled_flag = true;
		this.stopUpload();
		
		var stats = this.getStats();
		while (stats.files_queued > 0) {
			this.cancelUpload();
			stats = this.getStats();
		}
	};

	SWFUpload.queue.uploadCompleteHandler = function(file)
	{
	    var user_upload_complete_handler = this.settings.user_upload_complete_handler;
	    var continueUpload;

	    if (file.filestatus === SWFUpload.FILE_STATUS.COMPLETE)
	    {
	        this.customSettings.queue_upload_count++;
	    }

	    if (typeof (user_upload_complete_handler) === "function")
	    {
	        continueUpload = (user_upload_complete_handler.call(this, file) === false) ? false : true;
	    } else
	    {
	        continueUpload = true;
	    }

	    if (continueUpload)
	    {
	        var stats = this.getStats();
	        if (stats.files_queued > 0 && this.customSettings.queue_cancelled_flag === false)
	        {
	            this.startUpload();
	        } else if (this.customSettings.queue_cancelled_flag === false)
	        {
	            this.queueEvent("queue_complete_handler", [this.customSettings.queue_upload_count]);
	            this.customSettings.queue_upload_count = 0;
	        } else
	        {
	            this.customSettings.queue_cancelled_flag = false;
	            this.customSettings.queue_upload_count = 0;
	        }
	    }	  
	};
}